Finding the Fourth Proportional to 42,995.92, 64,488.72 and 11,827.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,995.92 : 64,488.72 = 11,827.12 : x
2. Step 2: Convert to fraction form
   42,995.92/64,488.72 = 11,827.12/x
3. Step 3: Cross multiply
   42,995.92x = 64,488.72 × 11,827.12
4. Step 4: Simplify right side
   42,995.92x = 762,715,830.09
5. Step 5: Solve for x
   x = 762,715,830.09/42,995.92
6. Step 6: Final answer
   x = 17,739.26